How to increase the database size limit on Exchange 2003 SP2

Connect to the Server that is running Exchange 2003 SP2
 Click Start > Run > type regedit > input Admin credentials > click OK
 Click one of the following registry subkeys, as appropriate for the store that you want to increase:
 For a mailbox store, edit the following registry subkey: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\Server  name\Private-Mailbox Store GUID
 For a public folder store, edit this subkey: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\Server  name\Public-Public Store GUID
 The following sequence would set Exchange database size to its allowable maximum of 75 Gigabytes: Edit > New > DWORD > name the new key as "Database Size Limit in Gb" > set value = 75 > OK
 Restart the Microsoft Exchange Information Store service: Start > Run > type "cmd" > press Enter > type in these lines...
 net stop msexchangeis
 net start msexchangeis
 Examine the Application log to verify that the database size has been set successfully. To do this, follow these steps: Start > Run > type "eventvwr.exe" > press Enter > navigate to the Application hive > locate event ID 1216 > verify that the database size has been set as configured within the registry